Question

sin^2 30°-2cos^3 60°+3tan^4 45°

Answer 1

Answer

Sin30=1/2

Cos60=1/2

Tan45=1

So sin^2 30-2 cos^3 60+3 tan^4 45=

(1/2)^2-2(1/2)^3+1^4

1/4-2(1/8)+1

1/4-1/4+1

=1

Therefore the answer is 1

Answer 2

Answer:

Sin30=1/2

Cos60=1/2

Tan45=1

So sin^2 30-2 cos^3 60+3 tan^4 45=

(1/2)^2-2(1/2)^3+1^4

1/4-2(1/8)+1

1/4-1/4+1

=1  

Therefore the answer is 1